A thriving export trade is carried on in agricultural produce, condensed milk is manufactured, and slate is extensively quarried in the neighbourhood, while some coal is exported from the neighbouring fields.
Next in importance is the manufacture of dairy products, the value of which in 1900 was $15,846,077 (an increase of 50.3% in ten years) and in 1905 was $15,028,326; at both censuses the state ranked third in the value of cheese, butter, and condensed milk and of food preparations, which were valued at $6,934,724 in 1905.
Butter, cheese and condensed milk manufactured were valued at $122,128 in 1900 and at $562,481 in 1905.
Among its manufactures are sewing machines, boilers, automobiles, bicycles, roller-skates, pianos, gloves and mittens, corsets, flour and dairy products, Borden's condensed milk factory being located there.
The principal industrial establishments include flour-mills (Limerick supplying most of the west of Ireland with flour), factories for bacon-curing and for condensed milk and creameries.